dopecalc

Fat Intake Calculator

Calculate your daily fat intake targets based on total calories and fat percentage, broken down into saturated, monounsaturated, and polyunsaturated fats.

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Recommended: 20-35% of total calories

About this Calculator

Calculate your daily fat intake targets based on total calories and fat percentage, broken down into saturated, monounsaturated, and polyunsaturated fats.

Formula & Calculations

Formula

Fat (g) = (Daily Calories × Fat% / 100) / 9 | Saturated ≤ 10% of total, Monounsaturated ~15-20%, Polyunsaturated ~5-10%
Where:
  • F=Total daily fat target in grams
  • Cal=Total daily calorie target
  • Pct=Fat percentage of total calories (default 30%)
  • SFA=Saturated fatty acids (max 10% of total calories)
  • MUFA=Monounsaturated fatty acids (~15% of total calories)
  • PUFA=Polyunsaturated fatty acids (~5-10% of total calories)

Assumptions

  • 1 gram of fat provides 9 kilocalories of energy.
  • Dietary guidelines recommend 20-35% of calories from fat, with saturated fat under 10%.
  • Fat type breakdown follows American Heart Association and WHO recommendations.

Calculation Examples

Example 1

Inputs:2,500 calories, 30% fat
Result:Total Fat: 83 g. Saturated: max 28 g, Monounsaturated: ~42 g, Polyunsaturated: ~14 g

F = 2500 × 0.30 / 9 = 83.3 g. Saturated max = 2500 × 0.10 / 9 = 27.8 g. Remaining split between MUFA and PUFA.

Example 2

Inputs:1,800 calories, 25% fat
Result:Total Fat: 50 g. Saturated: max 20 g, Monounsaturated: ~25 g, Polyunsaturated: ~5 g

F = 1800 × 0.25 / 9 = 50 g. Lower fat percentage for a higher-carb or higher-protein diet.

Frequently Asked Questions

Are all fats bad for you?

No. Unsaturated fats (found in olive oil, avocados, nuts, fish) are beneficial for heart health and hormone production. Saturated fats should be limited, and trans fats (found in processed foods) should be avoided entirely. Dietary fat is essential for vitamin absorption and cell function.

What's the difference between omega-3 and omega-6?

Both are essential polyunsaturated fatty acids your body cannot produce. Omega-3s (found in fatty fish, flaxseed, walnuts) are anti-inflammatory. Omega-6s (found in vegetable oils) are pro-inflammatory in excess. Aim for a ratio of roughly 1:1 to 1:4 of omega-3 to omega-6.

How much saturated fat is too much?

The American Heart Association recommends limiting saturated fat to less than 10% of total daily calories, and ideally under 7% for heart health. For a 2,000-calorie diet, that's a maximum of 22 g (or 16 g for stricter targets) of saturated fat per day.